This program was designed to run on Windows XP. According to the official website, they discontinued this software so it won't be updated anymore resulting that you may not be able to run it on your Windows 7 OS. However, you can try to run it using Compatibility mode for Windows XP (to do that, right click on the desktop shortcut, go to Properties -> Compatibility and select Windows XP) or you can try the successor of Everest from the same developer. You can visit the following web page for more information.
